Download Cell Growth and Reproduction (Mitosis Notes)

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Polycomb Group Proteins and Cancer wikipedia, lookup

Chromosome wikipedia, lookup

Polyploid wikipedia, lookup

NEDD9 wikipedia, lookup

Transcript
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
___________________
Cell Growth and Reproduction (Mitosis Notes)
Nucleus: Organelle that directs the activities of the cell._
Chromosome: Threadlike material made of DNA. The chromosomes
carry strands of DNA that determine an organism’s characteristics,
Characteristics are thinks like: hair color, eye color, skin tone, and
many others.
A human cell has _46_ chromosomes
A horse cell has _60__ chromosomes
A mouse cell has __40__ chromosomes
A corn cell has __20___ chromosomes
What is mitosis?
Mitosis is the process by which a cell reproduces.
When a cell divides, two new cells are created. Each new cell has a
nucleus (which contains genetic information and a complete set of
organelles. Most cells in the body are capable of cell division. A cell is
capable of dividing many times during the year.
Why is mitosis important?
Mitosis is important because it allows organisms to grow, and
replace worn out or damaged cells
All cells in an organism start off being the same. These cells are called
stem cells. Stem cells are cells that can specialize or turn into other
cells (like muscle cells, or nerve cells, or bone marrow.) Stem cells
are only present in the early stages of development (embryo). Adults
do not have stem cells.
These cells, among others, reproduce throughout your lifespan: Skin
Cells, Hair Cells, Bone Cells, and Blood Cells.
These cells continue reproducing but slow down after several years,
Nerve cells and Muscle cells.